I can't really say much. I don't really know if there were changes in FileMaker 10 that would cause problems. I have not run into them. There were also some changes to AppleScript in 10.6. But basically you should be able to get your scripts to work, with some modification. Try with small example AppleScripts, and see where yours is going wrong. I know there were huge changes in FileMaker 7, with the addition of tables; and differences between database, document and windows.
This is a link to the AppleScript documentation for FileMaker, which is no longer included in the install (should be, but isn't):
Thanks for the link! I isn't downloading at work, but no big surprise there.
The answer to my question is partly what you said, some things have changed. In the Filemaker dictionary to get a cell's value, you now have to address cellValue. But it turns out my biggest problem was using the demo version. I suspect they pulled Applescript support from it for the most part. Once I fired up the real version, Script Debugger's Explorer was happy as a clam at high tide. It saw everything going on inside Filemaker 10 just fine. Took me a whole two minutes to figure out how to fix a good part of my script.